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fix: KeyBuilder with brainpool parameters + ALG_TYPE_EC_FP_PUBLIC #5

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Merged
martinpaljak merged 2 commits into from
Aug 21, 2025
Merged

fix: KeyBuilder with brainpool parameters + ALG_TYPE_EC_FP_PUBLIC #5

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849702e
fix: KeyBuilder with brainpool parameters + ALG_TYPE_EC_FP_PUBLIC
dishmaker Aug 12, 2025
30f6a56
fix: backwards-compatible getDefaultsDomainParameters
dishmaker Aug 12, 2025
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27 changes: 20 additions & 7 deletions simulator/src/main/java/com/licel/jcardsim/crypto/ECKeyImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,10 @@ public ECKeyImpl(byte keyType, short keySize, byte memoryType) {
r = new ByteContainer(memoryType);
fp = new ByteContainer(memoryType);

setDomainParameters(getDefaultsDomainParameters(type, size));
ECDomainParameters defaults = getOptionalDomainParameters(type, size);
if (defaults != null) {
setDomainParameters(defaults);
}
}

/**
Expand Down Expand Up @@ -244,16 +247,24 @@ static KeyGenerationParameters getDefaultKeyGenerationParameters(byte algorithm,
}

/**
* Get defaults
* Get default
* <code>ECDomainParameters</code> for EC curve
* {@link http://www.secg.org/collateral/sec2_final.pdf}
*
* @param keyType
* @param keySize
* @return parameters for use with BouncyCastle API
* @param keyType KeyBuilder.TYPE_*
* @param keySize key size in bits, e.g. 256, 384 or 521 for Nist
* @return parameters for use with BouncyCastle API, or null
* @see ECDomainParameters
*/
static ECDomainParameters getDefaultsDomainParameters(byte keyType, short keySize) {
ECDomainParameters defaults = getOptionalDomainParameters(keyType, keySize);
if (defaults == null) {
CryptoException.throwIt(CryptoException.ILLEGAL_VALUE);
}
return defaults;
}

static ECDomainParameters getOptionalDomainParameters(byte keyType, short keySize) {
String curveName = "";
switch (keySize) {
case 113:
Expand Down Expand Up @@ -283,10 +294,12 @@ static ECDomainParameters getDefaultsDomainParameters(byte keyType, short keySiz
curveName = "secp" + keySize + "r1";
break;
default:
CryptoException.throwIt(CryptoException.ILLEGAL_VALUE);
break;
return null;
}
X9ECParameters x9params = SECNamedCurves.getByName(curveName);
if (x9params == null) {
return null;
}
return new ECDomainParameters(
x9params.getCurve(),
x9params.getG(), // G
Expand Down
6 changes: 6 additions & 0 deletions simulator/src/main/java/pro/javacard/engine/proxy/javacard/security/KeyBuilderProxy.java
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Original file line number Diff line number Diff line change
Expand Up @@ -158,6 +158,12 @@ public static Key buildKey(byte algorithmicKeyType, byte keyMemoryType, short ke
case KeyBuilder.ALG_TYPE_EC_FP_PARAMETERS:
key = new ECPublicKeyImpl(KeyBuilder.TYPE_EC_FP_PUBLIC, keyLength, keyMemoryType);
break;
case KeyBuilder.ALG_TYPE_EC_FP_PUBLIC:
key = new ECPublicKeyImpl(KeyBuilder.TYPE_EC_FP_PUBLIC, keyLength, keyMemoryType);
break;
case KeyBuilder.ALG_TYPE_EC_FP_PRIVATE:
key = new ECPrivateKeyImpl(KeyBuilder.TYPE_EC_FP_PRIVATE, keyLength, keyMemoryType);
break;
default:
CryptoException.throwIt(CryptoException.NO_SUCH_ALGORITHM);
break;
Expand Down
114 changes: 75 additions & 39 deletions simulator/src/test/java/com/licel/jcardsim/crypto/AsymmetricSignatureImplTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,12 @@

import com.licel.jcardsim.SimulatorCoreTest;
import javacard.security.*;

import org.bouncycastle.asn1.teletrust.TeleTrusTNamedCurves;
import org.bouncycastle.asn1.x9.X9ECParameters;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.util.encoders.Hex;
import org.junit.jupiter.api.Test;

Expand All @@ -36,7 +42,7 @@ public class AsymmetricSignatureImplTest extends SimulatorCoreTest {
// etalon msg
String MESSAGE = "C46A3D01F5494013F9DFF3C5392C64";
// signatures from card
final static String[] RSA_SIGNATURES = new String[]{
final static String[] RSA_SIGNATURES = new String[] {
// ALG_RSA_SHA_ISO9796
"389629B307B396FB2BCE1379DD950A5D21B052169FB8789E3A5483FDBE85B5B9B1AC92C50FD8D38F829D5565024506D69FC0A3DAF99BE379F62BE7BAC14C64DA100301CE96A9202151F1F227CB9AC492573BDFED0209CA6DCB19099B907E8C54FFF8A6C7919F892242A720E6A9113D5C9DDADF2E6FA0903CD35A88B48ACC4E62",
// ALG_RSA_SHA_PKCS1
Expand All @@ -63,7 +69,8 @@ public void testVerifyRSA() {
publicKey.setModulus(modulus, (short) 0, (short) modulus.length);
publicKey.setExponent(exponent, (short) 0, (short) exponent.length);

RSAPublicKey publicKey2048 = (RSAPublicKey) KeyBuilder.buildKey(KeyBuilder.TYPE_RSA_PUBLIC, KeyBuilder.LENGTH_RSA_2048, false);
RSAPublicKey publicKey2048 = (RSAPublicKey) KeyBuilder.buildKey(KeyBuilder.TYPE_RSA_PUBLIC,
KeyBuilder.LENGTH_RSA_2048, false);
byte[] modulus2048 = Hex.decode(RSA_2048_MODULUS);
publicKey2048.setModulus(modulus2048, (short) 0, (short) modulus2048.length);
publicKey2048.setExponent(exponent, (short) 0, (short) exponent.length);
Expand All @@ -88,49 +95,52 @@ public void testVerifyRSA() {
@Test
public void testSelfSignVerifyRSASHA1() {
System.out.println("self test sign/verify rsa SHA1");
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_PKCS1);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_PKCS1, null);
}

@Test
public void testSelfSignVerifyRSASHA224() {
System.out.println("self test sign/verify rsa SHA-224");
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_224_PKCS1);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_224_PKCS1, null);
}

@Test
public void testSelfSignVerifyRSASHA256() {
System.out.println("self test sign/verify rsa SHA-256");
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_256_PKCS1);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_256_PKCS1, null);
}

@Test
public void testSelfSignVerifyRSASHA384() {
System.out.println("self test sign/verify rsa SHA-384");
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_384_PKCS1);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_384_PKCS1, null);
}

@Test
public void testSelfSignVerifyRSASHA512() {
System.out.println("self test sign/verify rsa SHA-512");
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_512_PKCS1);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_512_PKCS1, null);
}

@Test
public void testSelfPrecompSignVerifyRSASHA1() {
System.out.println("self test precomputed sign/verify rsa SHA1");
testSelfPrecompSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_PKCS1, MessageDigest.ALG_SHA);
testSelfPrecompSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_PKCS1,
MessageDigest.ALG_SHA);
}

@Test
public void testSelfPrecompSignVerifyRSASHA256() {
System.out.println("self test precomputed sign/verify rsa SHA-256");
testSelfPrecompSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_256_PKCS1, MessageDigest.ALG_SHA_256);
testSelfPrecompSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_256_PKCS1,
MessageDigest.ALG_SHA_256);
}

@Test
public void testSelfPrecompSignVerifyRSASHA256_PSS() {
System.out.println("self test precomputed sign/verify rsa SHA-256 PSS");
testSelfPrecompSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_256_PKCS1_PSS, MessageDigest.ALG_SHA_256);
testSelfPrecompSignVerify(KeyPair.ALG_RSA_CRT, RSA_ETALON_KEY_SIZE, Signature.ALG_RSA_SHA_256_PKCS1_PSS,
MessageDigest.ALG_SHA_256);
}

/**
Expand All @@ -140,68 +150,79 @@ public void testSelfPrecompSignVerifyRSASHA256_PSS() {
public void testSelfSignVerifyECDSASHA1() {
System.out.println("self test sign/verify ecdsa SHA1");
// ecf2m keys
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA);
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA, null);
// ecfp keys
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA);
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA, null);
}

@Test
public void testSelfSignVerifyECDSASHA224() {
System.out.println("self test sign/verify ecdsa SHA-224");
// ecf2m keys
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_224);
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_224, null);
// ecfp keys
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_224);
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_224, null);
}

@Test
public void testSelfSignVerifyECDSASHA256() {
System.out.println("self test sign/verify ecdsa SHA-256");
// ecf2m keys
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_256);
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_256, null);
// ecfp keys
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_256);
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_256, null);
}

@Test
public void testSelfSignVerifyECDSASHA384() {
System.out.println("self test sign/verify ecdsa SHA-384");
// ecf2m keys
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_384);
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_384, null);
// ecfp keys
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_384);
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_384, null);
}

@Test
public void testSelfSignVerifyECDSASHA512() {
System.out.println("self test sign/verify ecdsa SHA-512");
// ecf2m keys
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_512);
testSelfSignVerify(KeyPair.ALG_EC_F2M, KeyBuilder.LENGTH_EC_F2M_113, Signature.ALG_ECDSA_SHA_512, null);
// ecfp keys
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_512);
testSelfSignVerify(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_112, Signature.ALG_ECDSA_SHA_512, null);
}

@Test
public void testSelfSignVerifyECDSA_Brainpool_SHA2() {
testSelfSignVerify(KeyPair.ALG_EC_FP, (short) 160, Signature.ALG_ECDSA_SHA_256, "brainpoolP160r1");
testSelfSignVerify(KeyPair.ALG_EC_FP, (short) 192, Signature.ALG_ECDSA_SHA_256, "brainpoolP192r1");
testSelfSignVerify(KeyPair.ALG_EC_FP, (short) 224, Signature.ALG_ECDSA_SHA_256, "brainpoolP224r1");
testSelfSignVerify(KeyPair.ALG_EC_FP, (short) 256, Signature.ALG_ECDSA_SHA_256, "brainpoolP256r1");
testSelfSignVerify(KeyPair.ALG_EC_FP, (short) 320, Signature.ALG_ECDSA_SHA_384, "brainpoolP320r1");
testSelfSignVerify(KeyPair.ALG_EC_FP, (short) 384, Signature.ALG_ECDSA_SHA_384, "brainpoolP384r1");
testSelfSignVerify(KeyPair.ALG_EC_FP, (short) 512, Signature.ALG_ECDSA_SHA_512, "brainpoolP512r1");
}

@Test
public void testSelfSignVerifyDSA_SHA() {
System.out.println("self test sign/verify DSA SHA");

testSelfSignVerify(KeyPair.ALG_DSA, KeyBuilder.LENGTH_DSA_512, Signature.ALG_DSA_SHA);
testSelfSignVerify(KeyPair.ALG_DSA, KeyBuilder.LENGTH_DSA_768, Signature.ALG_DSA_SHA);
testSelfSignVerify(KeyPair.ALG_DSA, KeyBuilder.LENGTH_DSA_1024, Signature.ALG_DSA_SHA);
testSelfSignVerify(KeyPair.ALG_DSA, KeyBuilder.LENGTH_DSA_512, Signature.ALG_DSA_SHA, null);
testSelfSignVerify(KeyPair.ALG_DSA, KeyBuilder.LENGTH_DSA_768, Signature.ALG_DSA_SHA, null);
testSelfSignVerify(KeyPair.ALG_DSA, KeyBuilder.LENGTH_DSA_1024, Signature.ALG_DSA_SHA, null);
}

@Test
public void testSelfSignVerifyRSA_MD5_PKCS1_PSS() {
System.out.println("self test sign/verify RSA MD5 PKCS1 PSS");
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_512, Signature.ALG_RSA_MD5_PKCS1_PSS);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_1024, Signature.ALG_RSA_MD5_PKCS1_PSS);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_512, Signature.ALG_RSA_MD5_PKCS1_PSS, null);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_1024, Signature.ALG_RSA_MD5_PKCS1_PSS, null);
}

@Test
public void testSelfSignVerifyRSA_RIPEMD160_PKCS1_PSS() {
System.out.println("self test sign/verify RSA RIPEMD160 PKCS1 PSS");
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_512, Signature.ALG_RSA_RIPEMD160_PKCS1_PSS);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_1024, Signature.ALG_RSA_RIPEMD160_PKCS1_PSS);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_512, Signature.ALG_RSA_RIPEMD160_PKCS1_PSS, null);
testSelfSignVerify(KeyPair.ALG_RSA_CRT, KeyBuilder.LENGTH_RSA_1024, Signature.ALG_RSA_RIPEMD160_PKCS1_PSS, null);
}

/**
Expand All @@ -212,17 +233,29 @@ public void testSelfSignVerifyRSA_RIPEMD160_PKCS1_PSS() {
* @param signAlg - signature algorithm
*/
@SuppressWarnings("deprecation") // random
private void testSelfSignVerify(byte keyAlg, short keySize, byte signAlg) {
private void testSelfSignVerify(byte keyAlg, short keySize, byte signAlg, String initParams) {
// generate keys
KeyPair kp = new KeyPair(keyAlg, keySize);
kp.genKeyPair();
PrivateKey privateKey = kp.getPrivate();
PublicKey publicKey = kp.getPublic();

// brainpools need to be initialized separately
if (initParams != null && initParams.startsWith("brainpool")) {
X9ECParameters x9params = TeleTrusTNamedCurves.getByName(initParams);
ECDomainParameters params = new ECDomainParameters(
x9params.getCurve(),
x9params.getG(), // G
x9params.getN(), x9params.getH(), x9params.getSeed());
((ECKeyImpl) publicKey).setDomainParameters(params);
((ECKeyImpl) privateKey).setDomainParameters(params);
}
kp.genKeyPair();

// init engine
Signature signEngine = Signature.getInstance(signAlg, false);
signEngine.init(privateKey, Signature.MODE_SIGN);
// sign length + extra space
byte[] signature = new byte[128 + 10];
// ASN.1 DER-encoded signature length + extra space
byte[] signature = new byte[140 + 10];
byte[] msg = new byte[65];
RandomData rnd = RandomData.getInstance(RandomData.ALG_PSEUDO_RANDOM);
rnd.generateData(msg, (short) 0, (short) msg.length);
Expand Down Expand Up @@ -258,18 +291,19 @@ private void testSelfPrecompSignVerify(byte keyAlg, short keySize, byte signAlg,
byte[] msg = new byte[65];
RandomData rnd = RandomData.getInstance(RandomData.ALG_PSEUDO_RANDOM);
rnd.generateData(msg, (short) 0, (short) msg.length);
//precompute digest for msg
// precompute digest for msg
MessageDigestImpl digestEngine = new MessageDigestImpl(digestAlgo);
byte[] msgDigest = new byte[digestEngine.getLength()];
digestEngine.doFinal(msg, (short) 0, (short) msg.length, msgDigest, (short) 0);
//sign orig message and verify using verifyPreComputedHash
// sign orig message and verify using verifyPreComputedHash
short signLen = signEngine.sign(msg, (short) 0, (short) msg.length, signature, (short) 10);
// issue https://code.google.com/p/jcardsim/issues/detail?id=14
assertTrue(signLen <= signEngine.getLength());
Signature verifyPrecompEngine = Signature.getInstance(signAlg, false);
testEnginePrecompVerify(verifyPrecompEngine, publicKey, msgDigest, signature, (short) 10, signLen);
//signPreComputedHash and verify using verify method
short signPrecompLen = signPrecompEngine.signPreComputedHash(msgDigest, (short) 0, (short) msgDigest.length, signature, (short) 10);
// signPreComputedHash and verify using verify method
short signPrecompLen = signPrecompEngine.signPreComputedHash(msgDigest, (short) 0, (short) msgDigest.length,
signature, (short) 10);
assertTrue(signPrecompLen <= signPrecompEngine.getLength());
Signature verifyEngine = Signature.getInstance(signAlg, false);
testEngineVerify(verifyEngine, publicKey, msg, signature, (short) 10, signPrecompLen);
Expand All @@ -286,7 +320,7 @@ private void testSelfPrecompSignVerify(byte keyAlg, short keySize, byte signAlg,
* @param etalonSign etalon signature bytes
*/
private void testEngineVerify(Signature engine, PublicKey publicKey,
byte[] etalonMsg, byte[] etalonSign, short etalonSignOffset) {
byte[] etalonMsg, byte[] etalonSign, short etalonSignOffset) {
testEngineVerify(engine, publicKey, etalonMsg, etalonSign, etalonSignOffset, (short) etalonSign.length);
}

Expand All @@ -301,9 +335,10 @@ private void testEngineVerify(Signature engine, PublicKey publicKey,
* @param etalonSign etalon signature bytes
*/
private void testEngineVerify(Signature engine, PublicKey publicKey,
byte[] etalonMsg, byte[] etalonSign, short etalonSignOffset, short etalonSignLength) {
byte[] etalonMsg, byte[] etalonSign, short etalonSignOffset, short etalonSignLength) {
engine.init(publicKey, Signature.MODE_VERIFY);
boolean result = engine.verify(etalonMsg, (short) 0, (short) etalonMsg.length, etalonSign, etalonSignOffset, (short) (etalonSignLength != 0 ? etalonSignLength : etalonSign.length));
boolean result = engine.verify(etalonMsg, (short) 0, (short) etalonMsg.length, etalonSign, etalonSignOffset,
(short) (etalonSignLength != 0 ? etalonSignLength : etalonSign.length));
assertEquals(true, result);
}

Expand All @@ -317,7 +352,8 @@ private void testEngineVerify(Signature engine, PublicKey publicKey,
* @param msgDigest precomputed hash value
* @param etalonSign etalon signature bytes
*/
private void testEnginePrecompVerify(Signature engine, PublicKey publicKey, byte[] msgDigest, byte[] etalonSign, short etalonSignOffset, short etalonSignLength) {
private void testEnginePrecompVerify(Signature engine, PublicKey publicKey, byte[] msgDigest, byte[] etalonSign,
short etalonSignOffset, short etalonSignLength) {
engine.init(publicKey, Signature.MODE_VERIFY);
boolean result = engine.verifyPreComputedHash(msgDigest, (short) 0, (short) msgDigest.length,
etalonSign, etalonSignOffset, (short) (etalonSignLength != 0 ? etalonSignLength : etalonSign.length));
Expand Down